Do one of the following:
•Right-click the Cutting Plane to bring up its context menu, and deactivate the Show Cutting Planes toggle
•Deactivate the Show Cutting Planes toggle from the drop-down 3D Cutaway menu of the Standard toolbar.
The 3D Cutaway is in effect, but the Cutting Plane and the tabs are hidden, except for the tab at the top of the screen.
To show the Cutting Planes again, click the toggle command or the eye icon at the top of the screen.